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HMRC internal manual

Self Assessment Manual

Records: agent record: setting up new SA agent codes

All requests for new SA Agent Codes must be made in writing to CAAT. The new agent must send confirmation that they require a Self Assessment Agent Code together with details of the business name, name of the partner/director of the business, address and telephone number to

Agent Maintainer Team
Benton Park View
Newcastle Upon Tyne
NE98 1ZZ

Note: HMRC cannot accept this information by telephone, fax or online. Requests made using these methods will not be accepted. The request must be made in writing.

All requests for new SA Agent Codes, whether resident or non-resident in the UK, including all amendments to these agent records, must be made in writing by the agent. Local Offices should ensure that all requests for new codes and amendments are sent immediately to the Central Agent Authorisation Team at the address above. On no account should local offices make any alterations to SA Agent Codes or to agent information.